Catechism of the Catholic Church §1889 — excerpt
Without the help of grace, men would not know how "to discern the often narrow path between the cowardice which gives in to evil, and the violence which under the illusion of fighting evil only makes it worse."
This translation is under copyright, so only the cited words are quoted here. Follow the link for the full text. Translation: English translation of the Catechism of the Catholic Church, 2nd ed. (Libreria Editrice Vaticana), as posted at vatican.va.
Also cites: CA 25